US4941919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper-based sliding material and method for producing the same
Assignee: Taiho Kogyo Co Ltd
•
Filing: 1988-06-15
•
Granted: 1990-07-17
•
Expires: 2008-06-15
Abstract
Abstract The sintered sliding material according to the present invention consists of from 0.1 to 10% by of graphite, from 1 to 7% by of alumina, and balance of copper, and occasionally at least one member selected from the group consisting of from 1 to 10% of Sn and from 1 to 30% of Pb, and/or not more than 1% of P, and includes the alumina dispersed in the copper matrix. The alumina is held by the copper matrix so that the particles of alumina are not separated from the material during sliding under a boundary lubricating condition.
Inventors
- 👤 Eiji Asada
- 👤 Takashi Tomikawa
- 👤 Tatsuhiko Fukuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:25
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/0084; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; B; B22; B22F; B22F2998/00; B22F2998/10; Y; Y10; Y10S; Y10S75/00; Y10S75/95; Y10S75/951; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
40 words
A sintered sliding material consisting of from 1 to 10% by weight of graphite, from 0.1 to 7% by weight of alumina, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
Claim 2
Dependent Claim
40 words
A sintered sliding material consisting of from 1 to 10% by weight of graphite, from 0.1 to 7% by weight of alumina, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
Claim 3
Dependent Claim
36 words
A sintered sliding material according to claim 1, wherein said alumina is held by the copper matrix so that said alumina is not separated from said sintered sliding material during sliding under a boundary lubricating condition.
Claim 4
Dependent Claim
22 words
A sintered sliding material according to claim 2, wherein at least 90% by weight of said copper consists of electrolytically deposited powder.
Claim 5
Dependent Claim
15 words
A sintered sliding material according to claim 1, wherein said alumina is coated with metal.
Claim 6
Dependent Claim
13 words
A sintered sliding material according to claim 4, wherein said metal is nickel.
Claim 7
Dependent Claim
31 words
A sintered sliding material according to claim 2, wherein said graphite is filled in boundaries of the copper particles in such a manner that vacancies are not formed in said boundaries.
Claim 8
Dependent Claim
23 words
A sintered sliding material according to any one of claims 2, 3, 4, or 6, wherein said graphite is impregnated with lubricating oil.
Claim 9
Dependent Claim
20 words
A sintered sliding material according to claim 7, wherein amount of said lubricating oil approximately 5% by weight or less.
Claim 10
Dependent Claim
67 words
A sintered sliding material consisting of from 1.0 to 10% by weight of graphite, from 1 to 7% by weight of alumina, at least one member selected from the group consisting of from 1 to 10% by weight of Sn and from 1 to 30% by weight of Pb, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
Claim 11
Dependent Claim
67 words
A sintered sliding material consisting of from 1.0 to 10% by weight of graphite, from 1 to 7% by weight of alumina, at least one member selected from the group consisting of from 1 to 10% by weight of Sn and from 1 to 30% by weight of Pb, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
Claim 12
Dependent Claim
36 words
A sintered sliding material according to claim 9, wherein said alumina is held by the copper matrix so that said alumina is not separated from said sintered sliding material during sliding under a boundary lubricating condition.
Claim 13
Dependent Claim
22 words
A sintered sliding material according to claim 10, wherein at least 90% by weight of said copper consists of electrolytically deposited powder.
Claim 14
Dependent Claim
15 words
A sintered sliding material according to claim 9, wherein said alumina is coated with metal.
Claim 15
Dependent Claim
13 words
A sintered sliding material according to claim 12, wherein said metal is nickel.
Claim 16
Dependent Claim
31 words
A sintered sliding material according to claim 10, wherein said graphite is filled in boundaries of the copper particles in such a manner that vacancies are not formed in said boundaries.
Claim 17
Dependent Claim
23 words
A sintered sliding material according to any one of claims 10, 11, 12, or 14, wherein said graphite is impregnated with lubricating oil.
Claim 18
Dependent Claim
20 words
A sintered sliding material according to claim 15, wherein amount of said lubricating oil approximately 5% by weight or less.
Claim 19
Dependent Claim
75 words
A sintered sliding material consisting of from 1 to 10% by weight of graphite, from 0.1 to 7% by weight of alumina, at least one member selected from the group consisting of from 1 to 10% by weight of Sn and from 1 to 30% by weight of Pb, not more than 1% by weight of P, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
Claim 20
Dependent Claim
75 words
A sintered sliding material consisting of from 1 to 10% by weight of graphite, from 0.1 to 7% by weight of alumina, at least one member selected from the group consisting of from 1 to 10% by weight of Sn and from 1 to 30% by weight of Pb, not more than 1% by weight of P, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
Claim 21
Dependent Claim
36 words
A sintered sliding material according to claim 17, wherein said alumina is held by the copper matrix so that said alumina is not separated from said sintered sliding material during sliding under a boundary lubricating condition.
Claim 22
Dependent Claim
22 words
A sintered sliding material according to claim 17, wherein at least 90% by weight of said copper consists of electrolytically deposited powder.
Claim 23
Dependent Claim
15 words
A sintered sliding material according to claim 17, wherein said alumina is coated with metal.
Claim 24
Dependent Claim
13 words
A sintered sliding material according to claim 20, wherein said metal is nickel.
Claim 25
Dependent Claim
31 words
A sintered sliding material according to claim 18, wherein said graphite is filled in boundaries of the copper particles in such a manner that vacancies are not formed in said boundaries.
Claim 26
Dependent Claim
21 words
A sintered sliding material according to any one of claims 20 or 22, wherein said graphite is impregnated with lubricating oil.
Claim 27
Dependent Claim
20 words
A sintered sliding material according to claim 23, wherein amount of said lubricating oil approximately 5% by weight or less.
Claim 28
Dependent Claim
48 words
A sintered sliding material consisting of from 1 to 10% by weight of graphite, from 0.1 to 7% by weight of alumina, not more than 1% by weight of P, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
Claim 29
Dependent Claim
48 words
A sintered sliding material consisting of from 1 to 10% by weight of graphite, from 0.1 to 7% by weight of alumina, not more than 1% by weight of P, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
Claim 30
Dependent Claim
36 words
A sintered sliding material according to claim 25, wherein said alumina is held by the copper matrix so that said alumina is not separated from said sintered sliding material during sliding under a boundary lubricating condition.
Claim 31
Dependent Claim
22 words
A sintered sliding material according to claim 26, wherein at least 90% by weight of said copper consists of electrolytically deposited powder.
Claim 32
Dependent Claim
15 words
A sintered sliding material according to claim 27, wherein said alumina is coated with metal.
Claim 33
Dependent Claim
13 words
A sintered sliding material according to claim 28, wherein said metal is nickel.
Claim 34
Dependent Claim
31 words
A sintered sliding material according to claim 26, wherein said graphite is filled in boundaries of the copper particles in such a manner that vacancies are not formed in said boundaries.
Claim 35
Dependent Claim
23 words
A sintered sliding material according to any one of claims 26, 27, 28 or 30, wherein said graphite is impregnated with lubricating oil.
Claim 36
Dependent Claim
20 words
A sintered sliding material according to claim 31, wherein amount of said lubricating oil approximately 5% by weight or less.
Claim 37
Independent Claim
77 words
A method for producing a sliding material comprises: an alumina-dispersing step for blending an alumina powder into copper powder and dispersing the alumina powder in the matrix of copper, thereby forming a copper-alumina blended powder; a graphite-blending step for mixing graphite powder with the copper-alumina blended powder; a spraying step for spraying the graphite-mixed powder on a substrate; and, a sintering step for sintering the mixed powder on the substrate to bond the mixed powder and substrate.
Claim 38
Independent Claim
77 words
A method for producing a sliding material comprises: an alumina-dispersing step for blending an alumina powder into copper powder and dispersing the alumina powder in the matrix of copper, thereby forming a copper-alumina blended powder; a graphite-blending step for mixing graphite powder with the copper-alumina blended powder; a spraying step for spraying the graphite-mixed powder on a substrate; and, a sintering step for sintering the mixed powder on the substrate to bond the mixed powder and substrate.
Claim 39
Independent Claim
121 words
A method for producing a sliding material comprises: an alumina-dispersing step for blending an alumina powder into copper powder and dispersing the alumina powder in the matrix of copper, thereby forming a copper-alumina blended powder; an alloying step for blending at least one powder selected from the group consisting of tin, lead, phosphorous, and an alloy of copper with at least one of tin, lead, and phosphorous, with the copper-alumina blended powder, thereby obtaining a composite powder; graphite-blending step for mixing graphite powder with the composite powder, thereby obtaining a graphite-mixed powder; a spraying step for spraying the graphite-mixed powder on a substrate; and, a sintering step for sintering the mixed-powder on the substrate to bond the mixed powder and substrate.
Claim 40
Independent Claim
121 words
A method for producing a sliding material comprises: an alumina-dispersing step for blending an alumina powder into copper powder and dispersing the alumina powder in the matrix of copper, thereby forming a copper-alumina blended powder; an alloying step for blending at least one powder selected from the group consisting of tin, lead, phosphorous, and an alloy of copper with at least one of tin, lead, and phosphorous, with the copper-alumina blended powder, thereby obtaining a composite powder; graphite-blending step for mixing graphite powder with the composite powder, thereby obtaining a graphite-mixed powder; a spraying step for spraying the graphite-mixed powder on a substrate; and, a sintering step for sintering the mixed-powder on the substrate to bond the mixed powder and substrate.
References Cited (Backward Citations)
JPS5641348A
Cited
JPS60106932A
Cited
US4615733A
Cited
US4707184A
Cited
JPS6254003A
Cited
JPS63167736A
Cited
US4871394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-16 | 1994-01-15 | 1994-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-16 | 1998-01-15 | 1998-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-16 | 2002-01-15 | 2002-07-17 | $7700.00 | Window Closed / Lapsed |